HELP! TMI with pic!!

Sherri • With the help of Glow, now pregnant with my third and final baby! :)
I thought I got what to be a positive pregnancy test. I took it a little early my AF is due Friday the 28. I was planning on re-testing Weds. So now my problem is is that I've had A LOT of extra CM and some cramping. So I put on a panty liner. So I went to the restroom and found this :/ could this be implantation bleeding? It is a brownish red, and I'm not seeing anymore of it, just again lots of CM.